<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <input type="text" value="123">
</body>
</html>

<script>
// 单词：bubble

var arr = [2, 3, 123, 99991];

// 冒泡排序
for (var i = 0; i < arr.length; i++) {
  for (var j = 0; j < arr.length - i - 1; j++) {
    if (arr[j] > arr[j + 1]) {
      var temp;
      temp = arr[j];
      arr[j] = arr[j + 1];
      arr[j + 1] = temp;
    }
  }
}

console.log(arr);

</script>